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Design of Sour Gas Treatment Plant Faculty Advisor: Dr.Fahmi Abu Al-Rub Industrial Contact: Dr.Mohamed Al-Marzouqi Coord PowerPoint Presentation
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United Arab Emirates University Faculty Of Engineering Graduation Project Unit Graduation Project I. Design of Sour Gas Treatment Plant Faculty Advisor: Dr.Fahmi Abu Al-Rub Industrial Contact: Dr.Mohamed Al-Marzouqi Coordinator: Dr.Salah Al-Omary. United Arab Emirates University

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Presentation Transcript
slide1

United Arab Emirates University

Faculty Of Engineering

Graduation Project Unit

Graduation Project I

Design of Sour Gas Treatment Plant

Faculty Advisor:Dr.Fahmi Abu Al-Rub

Industrial Contact:Dr.Mohamed Al-Marzouqi

Coordinator:Dr.Salah Al-Omary.

slide2

United Arab Emirates University

Faculty Of Engineering

Graduation Project Unit

Graduation Project I

Sour Gas Treatment Plant

Done by:

Osama Ali 980715144

Yousif Mohammed 980710588

GP 1 :Design of Sour Gas Treatment Plant

Done By :Osama Ali & Yousif Mohammed

slide3

Presentation content

  • Introduction
  • Processes Selection
  • Absorption Process by Amine Solution

GP 1 :Design of Sour Gas Treatment Plant

Done By :Osama Ali & Yousif Mohammed

slide5

Introduction

Natural Gas

Non-Hydrocarbon

(Sour Gas)

Hydrocarbon

What is Sour Gas?

Sour Gas is acidic gases such as Carbon dioxide and hydrogen sulphide.

GP 1 :Design of Sour Gas Treatment Plant

Done By :Osama Ali & Yousif Mohammed

slide6

Sour Gas Composition

Note: The composition of components is from ADMA Company

GP 1 :Design of Sour Gas Treatment Plant

Done By :Osama Ali & Yousif Mohammed

slide7

Presentation content

Effect of Sour Gas

Environmental effects

Industrial effects

GP 1 :Design of Sour Gas Treatment Plant

Done By :Osama Ali & Yousif Mohammed

slide8

Carbon Dioxide

- Corrosive material

- Reduce the heating value

- Non-combustible component

GP 1 :Design of Sour Gas Treatment Plant

Done By :Osama Ali & Yousif Mohammed

slide9

Hydrogen Sulphide

- H2S is a highly toxic

- Colorless

- Flammable gas

- 4.3% LEL and 45% HEL by volume with an auto-- ignition temperature of 500oF (292oC). Heavier than air (1.18 times heavier).

- It may accumulate in dangerous concentrations in drains, valve pits, vessels and tanks.

GP 1 :Design of Sour Gas Treatment Plant

Done By :Osama Ali & Yousif Mohammed

slide10

Health Effect

GP 1 :Design of Sour Gas Treatment Plant

Done By :Osama Ali & Yousif Mohammed

slide12

Quality specifications

  • Hydrogen sulphide must be less than 6 mg/m3 to prevent the effect of corrosion in process equipment.
  • Carbon dioxide is limited to 2% maximum to prevent dilution of the heat producing combustible sales gas.

GP 1 :Design of Sour Gas Treatment Plant

Done By :Osama Ali & Yousif Mohammed

slide13

Conditions

GP 1 :Design of Sour Gas Treatment Plant

Done By :Osama Ali & Yousif Mohammed

slide14

Processes selection

Process Type

Absorption

Adsorption

GP 1 :Design of Sour Gas Treatment Plant

Done By :Osama Ali & Yousif Mohammed

slide15

Absorption

Absorption process is used to remove a component (solute) from the gas stream by contacting the gas with a liquid solution (solvent).

Sweet Gas

Lean Solvent

Natural Gas

Rich Solvent

GP 1 :Design of Sour Gas Treatment Plant

Done By :Osama Ali & Yousif Mohammed

slide16

Adsorption

Adsorption is the process of removing impurities from a gas stream by means of a solid material called adsorbent that has special attraction for the impurities.

GP 1 :Design of Sour Gas Treatment Plant

Done By :Osama Ali & Yousif Mohammed

slide18

Introduction

  • Absorption requires mass transfer of substance from the gas stream to the liquid.
  • The component which is absorbed is called solute and the liquid is called solvent.
  • The relation between Absorption & Stripping
  • If the concentration of the vapor and liquid are in equilibrium, no driving force exist so no mass transfer will occur

Design of Sour Gas Treatment Plant

Done By :Osama Ali & Yousif Mohammed

slide19

Choice of solvent:

  • High solubility.
  • Low volatility.
  • Easy to recovery.
  • Low viscosity.
  • Low cost.

GP 1 :Design of Sour Gas Treatment Plant

Done By :Osama Ali & Yousif Mohammed

slide20

Amine Chemistry

The alkanolamines are the most generally accepted and widely used solvent for the removal of H2S and CO2 from natural gas.

GP 1 :Design of Sour Gas Treatment Plant

Done By :Osama Ali & Yousif Mohammed

slide21

Amines

·MonoEtanol Amine (MEA)

·DiEthanol Amine (DEA)

·Methyldiethanolamine (MDEA)

GP 1 :Design of Sour Gas Treatment Plant

Done By :Osama Ali & Yousif Mohammed

slide22

Amines

  • From the three types of amines, DEA amine is selected. The reasons for select DEA are in following points:
  • DAE is much less corrosive to carbon steel than MEA
  • DEA is less volatile then MEA
  • MDEA is much less reactive than either DEA

GP 1 :Design of Sour Gas Treatment Plant

Done By :Osama Ali & Yousif Mohammed

slide23

GAS SWEETENING BY DEA

Process Description

The gas sweetening process consists basically of two parts :

a. Absorption b. Regeneration

Process Reaction

GP 1 :Design of Sour Gas Treatment Plant

Done By :Osama Ali & Yousif Mohammed

slide24

DEA Process

GP 1 :Design of Sour Gas Treatment Plant

Done By :Osama Ali & Yousif Mohammed

slide26

Conclusion

  • Absorption with amine was selected.
  • Among the amine processes, the DEA process was found to be the best to treat the sour gas with the suggest specifications.
  • Sour gas contains H2S and CO2, H2S was highly toxic, thus experiment analysis could not be carried out in our laboratories. Since H2S safety requirements are not available in the Chemical Engineering Department laboratories.

GP 1 :Design of Sour Gas Treatment Plant

Done By :Osama Ali & Yousif Mohammed